[Lonesome in Massachussets]

Lally columns and jacks?

I am half serious. I suppose they could drive new piles between the existing ones and place something like this (only much bigger) between the pile and structure, at least as a temporary measure, then drive the existing piles deeper, and restore the previous configuration, more or less.

[ncalburt]

But is there any bedrock under all the landfill or just sand ?